How to open python

There are two ways to open files in Python: the open() function and the with statement. The open() function is used to open a file and returns a file object, which represents a file handle. The with statement is used to create a file object and automatically close the object, even under abnormal circumstances.

Open a file in Python

How to open a file?

There are two basic ways to open a file in Python:

Use the open() function

The open() function is used to open a file and returns a file object. A file object represents a handle to a file and can be used for other file operations.

Syntax:

<code class="python">file_object = open(filename, mode)</code>

• filename: The name of the file to be opened.
• mode: Open mode.

Open mode

• 'r': read-only mode.
• 'w': Write-only mode, create the file if it does not exist, and clear it if it exists.
• 'a': Append mode, if the file does not exist, create it, if it exists, write it at the end of the file.
• 'r ': read-write mode, the file must already exist.
• 'w ': read-write mode, create the file if it does not exist, clear it if it exists.
• 'a ': Read-write mode, if the file does not exist, create it, if it exists, write it at the end of the file.

Using the with statement

The with statement can be used to create a file object and automatically close the object. File objects are closed correctly even under abnormal circumstances.

Grammar:

<code class="python">with open(filename, mode) as file_object:
    # perform file operations</code>

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